TheMCP25050I/OExpanderisaneffectivedevice
usedinaControllerAreaNetwork(CAN),whichoper-ateswithouttheuseofamicrocontroller.Itsupports
CANV2.0Bwithbitratesupto1Mb/s.SincetheI/O
Expanderisastand-alonedevice,itcanbeconfigured
touserdefaultsusingasoftwaretemplate.These
defaultsarestoredinnon-volatileEPROM.Anetwork
protocolmustbechosenthatsupportsaMasterNode.
TheMasterNodeisrequiredforpeer-to-peercommu-nicationsbetweenI/OExpanderNodesand,therefore,
handlescommunicationtoandfromallI/OExpander
Nodes.Forthisdesign,wehavechosentheCAN-NET
protocol,whichprovidesagenericframeworkforcom-municationthatnativelysupportsI/OExpanderNodes.
TheCAN-NETframeworkallowsuserstodevelopa
proprietaryprotocolforusebytheirownproducts.MAN816ACANSystemUsingMultipleMCP25050I/OExpandersWiththesubstantialI/Ocapabilityoftheexpanders,allAuthor:DiversifiedEngineeringInc.ofthescissor-liftcontrolsignalsareabletoseamlesslyMicrochipTechnologyInc.communicatewitheachother.TheMCP25050hasmanyperipherals,suchasdigitalI/O,four10-bitA/DINTRODUCTIONchannelsandtwoPWMoutputswithup
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